Oracle VM 2.2.0: error running mkinitrd

[Josep Cols]

Hi:
I've tried to make a raid (raider -R1) on a Oracle VM 2.2.0 machine: a red-hat like linux + xen based on linux 2.6.18-128.2.1.4.9.el5xen distro.
All worked ok, but, at mkinitrd fails (and I'm not able to boot from md disk):
The error is (I attach whole log,):

Create initram filesystem and install GRUB in /dev/sdb [#554:step2]
mkinitrd -f --preload=raid1 2.6.18-128.2.1.4.9.el5xen [#555:step2]
Enter in chroot system... [#561:step2]
usage: mkinitrd [--version] [--help] [-v] [-f] [--preload <module>]</module>
[--force-ide-probe] [--force-scsi-probe | --omit-scsi-modules]
[--image-version] [--force-raid-probe | --omit-raid-modules]
[--with=<module>]</module> [--force-lvm-probe | --omit-lvm-modules]
[--builtin=<module>]</module> [--net-dev=<interface>]</interface>
[--without-usb] [--without-multipath] [--without-dmraid]
[--fstab=<fstab>]</fstab> [--nocompress] <initrd-image> <kernel-version></kernel-version></initrd-image>

   (ex: mkinitrd /boot/initrd-2.2.5-15.img 2.2.5-15)

Error_chroot_mkinitrd

Thanks

[Josep Cols]

Hello:
After modifed raider, I've run the phase 1 OK.
Initrd was generated usin cmd:
mkinitrd -f --preload=raid1 /boot/initrd-2.6.18-128.2.1.4.9.el5xen.img 2.6.18-128.2.1.4.9.el5xen
.
But when I try to boot from 2nd disk:
-- grub loads OK.
--An error occurs:
Error 19: Linux kernel must be loaded before initrd
.
And I'm unable to boot the system.
.
So, I think than Oracle VM Linux is unsupoted.
.
Thanks